anonymous
  • anonymous
Write the correct description of the graph of the inequality -4x<20. Can someone PLEASE show me how to do this, i have to take a test that is going to have a bunch of similar questions like this one.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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cwrw238
  • cwrw238
first simplif:y -4x < 20 divide both sides by -4: x > -5 note: dividing by a negative quantity reverses the inequality sign
cwrw238
  • cwrw238
can you continue ?
anonymous
  • anonymous
mmm no sorry, do i divide 1 from both sides?

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cwrw238
  • cwrw238
no, now we can draw the graph; the graph is a straight line with an open circle at -5 and shaded on the right (its an open circle because the result does not include -5)
anonymous
  • anonymous
oh ok thank you, so all i have to do is simplify and write out the answer?
cwrw238
  • cwrw238
|dw:1377611671121:dw|
anonymous
  • anonymous
Quick lesson : you solve it just like an equation except for the rule. when dividing/multiplying by a negative, the inequality sign changes. if there is an equal sign involved, it will be a closed circle. if no equal sign, it will be an open circle. if it is less then, shading goes to the left. if it is greater then, shading goes to the right
anonymous
  • anonymous
Thank you both, i understand
cwrw238
  • cwrw238
yw
anonymous
  • anonymous
glad we could help :)

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